Historical Note: Pofessor Clark obtained his Ph. D. from Princeton and then went on to teach at Brown University, where he spent 14 years, with sabbaticals at the Institute for Advanced Study and the Mathematics Institute in Aarhus, Denmark. In 1975 Purdue offered him the Deanship of the School of Science, where he spent 10 years. He served on the Board of Directors of Fermilab from 1978 to 1984. He retired in the summer of 1997, as executive vice president of Research Foundation of the City University of New York, after a career as a mathematics professor and academic administrator in a variety of positions at Brown, Purdue, Clarkson, Califiornia State, and the City University of New York. One of his last accomplishments at RF/CUNY was to move the entire operation into a building at 30 West Broadway, the culmination of four years of planning and construction. It was all ruined when 9/11 occurred. The building was to badly contaminated to be usable, but fortunately none of the staff were seriously injured.